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27 reviews
Excellent for filtering out HF noise and interference.
These rings seemed expensive, but did exactly what they were supposed to do. They are of good quality. I put 8 turns of cable round the rings on the audio and RS232 control cables. This stopped the severe interference from my Raspberry Pi 3 from disrupting my HF radio transceiver.
The size allows cables with connectors be wound through the toroid easily.
The results have been so good that i do not need to buy an expensive isolation unit. The rings named packed in a purpose made cut foam packaging which protected them from fracture in the post.
Value is hard to say ... but I will buy one more for a similar purpose.
I have not used these for a Balun. Read full review
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
RF Line Isolator.
I need the core to build a RF line isolator, and needed a good quality product, this would was just right for my requirements,
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
Ecxellent product
Excellent for amateur radio usage. I made a few RF chokes and all of them behave as expected.
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
i can use it either a bulun or feed a fe...
i can use it either a bulun or feed a few turns RG8 as an rf choke. Only down side its big and heavy ok at home but would use either ft120 or ft80 for portable to save weight.
Verified purchase: Yes • Condition: new • Sold by: 2e0ncg
Excellent Ham Radio use.
Excellent for Ham Radio current balun, works from 1MHz upwards I believe as it's #31 grade. Just make sure you wind it correctly for maximun effect.
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
great value
good product
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
RFI Fix
These were purchased to try and fix an RFI problem with our telephone system. I need to do further tests yet, but these should go a long way towards fixing the problem
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
I can recommend
Good product, works properly at the right frequency.
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
Used for making a Common Mode Choke for HF
Item as descibed and looks the same as in pic, arrived on time, all good.
Verified purchase: Yes • Condition: new • Sold by: qubits-uk
Great for Hf Dipole
Great item, Noise level has dropped around 2/3 S Points on a 40M Dipole with this fitted
Verified purchase: Yes • Condition: new • Sold by: qubits-uk